How to sell Sonic Frontiers SFS 80 Tube Amplifier, Melos SHA Gold Tube Preamplifier, AlonI

Hi. After years of dormancy, I have a question.

I am helping a friend (really, it is not me) who is retiring and leaving the country and retiring liquidate some of his audio gear. He has some great stuff - a Sonic Frontiers SFS 80 Tube Amplifier, a Melos SHA Gold Tube Preamplifier,  Acarian Systems Alon I Speakers and other stuff as well.

I am wondering about:

• Where to sell (here, Craigslist dealing in person, ebay, other places?) 
• How to maximize his return (in terms of fees, etc.)
• Sell individually or as a package

When considering these aspects, I am concerned re shipping heavy amp and speakers. We are within 3 hours of Boston, Montreal, and NYC, so, in person deals for the heavy items in these areas would be best I think?

I have a lot of experience selling minor things (I am a 30 year de-cluttering and minimalist veteran, not really for profit) on ebay and CL, but have never bought/sold on here.

So based on all of the above, what's the forum's advice.